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Full Discussion: Naive coding...
The Lounge What is on Your Mind? Naive coding... Post 302991963 by MadeInGermany on Sunday 19th of February 2017 02:06:28 PM
Old 02-19-2017
I don't like the assumption of ASCII codes.
Without it becomes better readable.
Also you are missing a logical OR
Code:
for count in $( seq 0 $str_len )
do
	# Reuse variable _number_ to obtain each character per loop.
	number=${tbinput:$count:1}
	# IF a character is not numerical then reset the scan start point.
	if [[ $number < 0 ]] || [[ $number > 9 ]]
	then
		scan_start=0
		tbinput=0
	fi
done

Then you can optimize even the OR
Code:
if [[ $number != [0-9] ]]

And then it's only a small step to realize that perhaps the whole loop can be replaced.
 

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LEARN ABOUT OPENSOLARIS

echo

echo(3XCURSES)						  X/Open Curses Library Functions					    echo(3XCURSES)

NAME

       echo, noecho - enable/disable terminal echo

SYNOPSIS

       cc [ flag... ] file... -I /usr/xpg4/include  -L	/usr/xpg4/lib 
	-R  /usr/xpg4/lib  -lcurses  [ library... ]

       c89 [ flag... ] file... -lcurses [ library... ]

       #include <curses.h>

       int echo(void);

       int noecho(void);

DESCRIPTION

       The  echo()  function enables Echo mode for the current screen. The noecho() function disables Echo mode for the current screen. Initially,
       curses software echo mode is enabled and hardware echo mode of the tty driver is disabled. The echo() and noecho() functions control  soft-
       ware echo only. Hardware echo must remain disabled for the duration of the application, else the behavior is undefined.

RETURN VALUES

       Upon successful completion, these functions return OK. Otherwise, they return ERR.

ERRORS

       No errors are defined.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       getch(3XCURSES), getstr(3XCURSES), initscr(3XCURSES), libcurses(3XCURSES), scanw(3XCURSES), attributes(5), standards(5)

SunOS 5.11							    5 Jun 2002							    echo(3XCURSES)
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